Both the people and tenth amendment are designed to the power of the federal government

limit, buffer, keep in check, etc. would help if there a word bank but basically synonyms of the 3 things i said should be applicable

peasants’ war, (1524–25) peasant uprising in germany inspired by changes brought by the reformation, peasants in western and southern germany invoked   divine law to demand agrarian rights and freedom from oppression by nobles and landlords. as the uprising spread, some peasant groups organized armies. although the revolt was supported huldrych zwingli and thomas müntzerits condemnation by martain luther contributed to its defeat, principally by the army of the swabian league. some 100,000 peasants were killed. reprisals and increased restrictions discouraged further attempts to improve the peasants’ plight.

i think it would be " a" i might be wrong tho

four sitting presidents have been assassinated while in office but the first was abraham lincoln,